Schowe



(No Modell.)

W. P. SGHOWE. SAW MILL DOG.

.9. .0 S. 4 E 1, W 9 E 2 m I 0 W N PatentedJan. I, 1884.

1N VEJV TOR.

n. pneus. Pwnmmpnnr. wumngm n c l construction and arrangement of parts of that UNITED STATES PATENT Drunen..`

'WILLIAM nsonown, or INDIANAPOLIS, INDIANA, AssIGNon rro soIIoWE a rnoivrs, or sAIvIn PLACE.

SAW-MILL DOG.

SPECIFICATION forming partof Letters Patent No. 291,409, dated January 1, 1884. i Application led Xovcmbcr 10,1883. (No modell To all whom it may concern.-

Be it known that I, WILLIAM F. SoHown, of the city of Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Saw-Mill Dogs, of which the following is a specification.

`My said invention consists in a certain novel class of devices known as saw-mill dogs for circular-saw mills, whereby such dogs may be easily and quickly adjusted, both vertically and horizontally, and prickly and securely operated.

Said invention will beiirst fully described, and then pointed out in the claims.

Referring to the accompanying drawings;r

which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure lis a side elevation of myimproved dog when in operation; Fig. 2, a top or plan view thereof on an enlarged scale; Fig. 3, a longitudinal vertical section of the same on the dotted line .e z; Fig. 4, a transverse vertical section on the dotted line g/ y; Fig. 5, an elevation of the opposite side to that shown in Fig. l, and Fig. 6 a view looking toward the standard from the dotted line x w.

In said drawings, the portions marked A represent the head-block of the mill; B, the standard of my improved dog; C, the vertically-sliding block; D, the handle for operating the cams in said block; E, a horizontallysliding block,- F, the dog, and G a cam-lever for operating the dog. The head-block A is the ordinary head-block used in circular-saw mills, and is operated in the ordinary manner. The standard B is a straight bar of iron bolted fast to the block A, and supports the dog and its operating parts. The block C is adapted to partly encircle the standard B, (see Fig. 2,) and to slide up and down thereon. It is provided with cams c, which are set in seats therein, (see Fig. 6,) and are provided with projecting pins c', with which the cam-slots in the handle D engage, whereby said cams are operated. rlhe plate C forms a part ofthe j block C, and holds theseA cams in their seats, the pins c projecting through` holes in said plate, and said holes being lcrge enough to permit the necessary movement ofthe pins VIt isV provided with two cam-slots, (see Fig. 55

5,) which engage with the pins c on the cams c, as shown. Vhen this handle is raised, it operates to draw the cams away from the standard B, and thus permit the block C to be moved up and down on said standard. 6o When the handle is forced down, it drives the cams tightly against the standard, and holds the block C firmly in place. The block E is mounted in ways formed therein in the side of the block C, and slides therein. It is 6 5 adapted to be held in any required position in said ways by the pin e, which passes down through a hole in one of the ways into one of a series of holes in itself.` (See Fig. 3.) The dog F is secured tothe block E by the pivot- 7C bolt f. Its front end extends out and is adapted to enter the log, and its rear end extends back, and is formed to receive and be oper ated by a cam. The lever Gis secured to the block E by the pivot-bolt g. It has a cam 75 end, g, (see Figs. 1 and 4,) which ts into the correspondinglyformed portion of the dog F. Vhen thehandle end of this lever is lifted, it depresses the rear and raises the forward end of the dog F, freeing said dog from the log. 8c When it is depressed, it forces the forward end of said dog down into the log, as shown in Fig" l, thus holding said log firmly in position.

The operation of my invention is as follows: 8 5 When a log is to be secured, the handle D is raised, loosening the cams, and the block Gis moved up or down the standard B to the proper position. Said handle is then forced down, and, throughsaid arms,secures the block 9o in place. The pin e is then raised and the block E moved in its ways along the block C until the end of the dog projects the proper distance over the log, the lever G being Incantime raised. The log being turned `to proper 95 position, the lever G is forced down, and the dog thus forced int the wood, securing the log, as will be rea ily understood by those conversant with the operation of such devices.

The standard B might be extended down be- IOO low the headblock, and 4another dog used to l with one end of said dog, and thus as said legrip the under side of the log, by making such changes in the construction as are incident to turning the parts under side up, and which will be apparent to any one skilled in the art.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination, in a saw-mill dog, of a Vertical standard, a block, C, adapted to be moved along the same, two cams, c, having projecting pins c, and a handle, D, havingv cani-slots which t over and engage with said pins, whereby said cams may be operated to impinge on said standard, and thus secure said block in position thereon, substantially as set forth.

2. The combination, in a saw-mill dog, of a sustaining-block, a dog centrally secured by a pivot, and a earn-lever pivoted to the same block as the dog, the cam end whereof engages ver kis raised and lowered will Withdraw the dog from the log or force it into the same, substantially as set forth.

3. The combination, in a saw-mill dog, of the standard B, the block C, movably mounted thereon, the cams c, having projecting pins c', the handle D, provided with cani-slots, which iit over and engage with said pins, whereby said block is secured in position on the standard, the horizontal sliding` block E, the dog F, mounted thereon, and the cam-lever G, for operating the saine, substantially as described, and for the purposes specified.

In Witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 3d day of November, A. D. 1883.

WVM. F. SGHOWE. [1.. s]

In presence of C. BRADFORD, OI-rAs. L. THURBER. 

